Tame a male and a female, breed them, level the health only, kill them cause the more theyre level stat is the more mutton you get (doesnt need to be at full health it only needs a high health level stat)
You should use Ovis for a mutton farm because mutton is like a less effective type of kibble. Most dinos Love mutton so this is a very useful way to use these!
If you wanna get wool without having to get ovis by just geting vegie cake make a cage with dino gate then get a argy to transport it into the cage then just simply shear it with scissors.